Did the other MS get the formula change

I'll sum the rumors up and let's expect answers:

1. There was a new EXP-splitting formula which was invented in the direction of discouraging leeching
   
2. It was applied only in kMST, not kMS itself
   
3. It came in the Aran patch and only applied to Arans
   
4. It got removed after a certain period due to complexity and inefficiency
   

Now it would be wonderful if anyone can provide solid proofs and confirmation on these urban rumors.

@ Spidey: That is a very reasonable solution, but you'd have to be very careful with the level range, seeing as it is quite reasonable for a 18x Bishop to train with a 13x Melee, whereas a 14x Melee will easily be able to sell BF full-exp leech to a 9x leecher.

New formula was made -> Came with aran in KMS -> New formula sucked complete ass -> Formula was removed -> Newer formula was made -> Newer formula still sucked ass but was better and was implemented anyway -> Newer formula is probably what SEA is getting.